Hard references to prefabs are converted to weak references at build time.

Copy the UnityWeakReference folder in to your project. Use WeakPrefab/WeakSprite/WeakTexture2D/WeakAudioClip in your MonoBehaviour/Array/List/Custom Class and fill out the field in the editor. All set!

public WeakPrefab MyPrefab;

void Start() { Instantiate(MyPrefab.Prefab); }

• Prefab/GameObject
• Sprite
• Texture2D
• AudioClip

• If used in a script in the project view, the referenced object will be added to the build even if the reference holder is not.
• To speed up the processing it looks MaxDepth layers down. The lower the faster, but deeper nesting needs higher. Default is 5.